CN104384021B

CN104384021B - Electrostatic dust collector

Info

Publication number: CN104384021B
Application number: CN201410666715.0A
Authority: CN
Inventors: 任利萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-11-20
Filing date: 2014-11-20
Publication date: 2017-10-20
Anticipated expiration: 2034-11-20
Also published as: CN104384021A

Abstract

The invention relates to a dust removal system installed in a desulfurization absorption tower, in particular to an electrostatic dust collector installed in the absorption tower, which is of a rectangular structure, and the interior of the electrostatic dust collector is divided into an upper chamber and a lower chamber by a sandwich plate; a dust collecting pole plate mounting hole is formed in the middle of the sandwich plate, and drying cylinder mounting holes are formed in the four corners of the sandwich plate respectively; the dust collecting polar plate is fixedly arranged on the dust collecting polar plate mounting hole, and the drying cylinder is fixedly arranged on the drying cylinder mounting hole; a discharge electrode plate is fixedly arranged in the lower chamber; a soot blowing device is installed in the upper bin, sliding guide rails are fixedly installed on two sides of a dust collecting pole plate installation hole in the upper bin, and a soot blowing nozzle is installed on the sliding guide rails in a sliding mode; the lower chamber is connected with a hot smoke drying circulating device through a drying cylinder. The method has the advantages of optimizing the original equipment, improving the dust removal rate after desulfurization, reducing the emission of atmospheric pollutants and reducing the maintenance cost of the equipment.

Description

Electrostatic precipitator

Technical field

The invention belongs to field of dust removal equipment, more particularly to a kind of dust pelletizing system in desulfuration absorbing tower.

Background technology

Currently, industrial dust is one of pollution sources of atmospheric environment, and conventional electrostatic deduster and sack cleaner are in dry method Dust removal field has an extensive use, but due in desulfuration absorbing tower the reason such as too high and demister hydraulic performance decline of cigarette speed cause greatly Amount gypsum particle is carried by flue gas, and the smoke content even in desulfuration absorbing tower entrance is very low, the smoke content behind absorption tower In the trend gone up not down, secondary pollution is caused, one-level wet dust separater is increased using on absorption tower spraying layer top, to inhaling Receive tower exiting flue gas and carry out Electrostatic Absorption and filtration treatment, space and original load-bearing using absorption tower top, reduce field Ground takes and construction costs, the dust content for being discharged into air is less than 5mg/m3.

The content of the invention

The invention aims to reduce the dust content of industry smoke evacuation, air pollution is reduced, makes industrially desulfurized dedusting Fume extractor reaches more effective dedusting.

To achieve these goals, the technical scheme is that having installed electrostatic additional on industrially desulfurized dusting smoke-discharging device Dust arrester, reaches the filtering dust of more effective fruit by way of Electrostatic Absorption.Industrially desulfurized dusting smoke-discharging device is by desulfurization Absorption tower stack shell, agitator, circulating pump, spray equipment, demister arrangements, electrostatic precipitator, flue and chimney composition.Desulfurization is inhaled Receive tower body it is general in high cylindrical tube shape, bottom is that agitator and circulating pump are mounted with laying dust Chi Cebi, laying dust pond is up Position offers a smoke inlet, and smoke inlet position is up evenly distributed successively to be provided with one group of spray equipment, and spray equipment is past Upper is one group of demister arrangements, and demister arrangements up install an electrostatic precipitator on stack shell section, and top sets row Mouth, exhaust opening connection flue connects chimney.

Described electrostatic precipitator rectangular in configuration, inside is divided into upper bin and lower bin by sandwich plate；In sandwich plate Between open up and open up drying mounting hole respectively on dust collecting pole plate mounting hole, four angles；It is fixedly mounted and receives on dust collecting pole plate mounting hole Drying is fixedly mounted on dirt pole plate, drying mounting hole；Discharge plate is fixedly mounted in lower bin；Soot blowing is installed in upper bin The both sides of dust collecting pole plate mounting hole are installed with rail plate, rail plate the soot-blowing nozzle that is slidably installed in device, upper bin； Lower bin connects hot cigarette drying cycles device by drying.

Described electrostatic precipitator is chamber in rectangular configuration, and length is not less than 5m, and width is not less than 3m, and height is not small In 1m, the shape of changeover portion is consistent with desulfuration absorbing tower stack shell with diameter up and down.

Described dust collecting pole plate is made up of foam metal plate or honeycomb ceramic plate or foamed plastics with conducting function, is in Cylindrical type is constructed or rectangular slab construction；The dust collecting pole plate diameter of cylindrical type construction is not less than 2m, and thickness is not less than 8mm；Rectangular slab The dust collecting pole plate length of construction is not less than 2m, and width is not less than 2m, and thickness is not less than 8mm；The dust collecting pole plate of cylindrical type construction is straight Footpath is not less than the diameter of desulfuration absorbing tower stack shell；The dust collecting pole plate length of side of rectangular configuration is straight not less than desulfuration absorbing tower stack shell Footpath.

Described discharge plate is to be arranged to make up by 10 groups of bonding jumpers with prickle along dust chamber length direction or width, Prickle spacing is between 100mm-500mm, and two ends are formed by welding discharge electrode framework with bonding jumper.

The soot-blowing nozzle and rail plate that described soot blower is arranged in a row by one group are constituted, purging section and dust collecting pole plate Width or diameter it is consistent；Length or diameter of the stroke of rail plate not less than dust collecting pole plate；Soot-blowing nozzle is connected with pulsometer, Outlet pressure is risen between 1.0MPa-8.0MPa.

Described discharge plate and dust collecting pole plate, spacing preferably is between 200mm-500mm.

Described hot cigarette drying cycles device is made up of drying, heater, uniaxial pressure airduct；Uniaxial pressure airduct Having heaters is installed, one end is connected with desulfuration absorbing tower stack shell, and drying is connected in one end in pipeline；Drying fixed insulation is installed On sandwich plate, connected with lower bin；Uniaxial pressure wind tube outlet pressure is risen between 2000Pa-5000Pa, heater outlet temperature Degree is more than 180 degrees Celsius.Integral device makes flue gas carry humidity because of spraying and dedusting, and this device reduces or avoids flue gas because wet The problem of degree causes easy frosting greatly, protective effect is served to equipment.

The beneficial effects of the present invention are original equipment is optimized, the dust removal efficiency after desulfurization is improved, air dirt row is reduced High-volume, cost of equipment maintenance is reduced.

Brief description of the drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings：

Accompanying drawing 1 is industrially desulfurized dusting smoke-discharging device schematic diagram of the invention.

Accompanying drawing 2 is electrostatic precipitator internal structure schematic diagram of the invention.

For electrostatic precipitator internal cross section organigram of the invention, (upper bin is down cutd open accompanying drawing 3, using circular type Dust collector pole).

For electrostatic precipitator internal cross section organigram of the invention, (lower bin is up cutd open accompanying drawing 4, using circular type Dust collector pole).

For electrostatic precipitator internal cross section organigram of the invention, (upper bin is down cutd open accompanying drawing 5, using rectangular slab Dust collector pole).

For electrostatic precipitator internal cross section organigram of the invention, (lower bin is up cutd open accompanying drawing 6, using rectangular slab Dust collector pole).

In accompanying drawing：Desulfuration absorbing tower stack shell 1, smoke inlet 11, exhaust opening 12, agitator 2, circulating pump 3, spray equipment 4, remove Day with fog device 5, electrostatic precipitator 6, sandwich plate 61, mounting hole 611, drying mounting hole 612, upper bin 62, lower bin 63, receipts Dirt pole plate 64, discharge plate 65, soot blower 66, soot-blowing nozzle 661, rail plate 662, pulsometer 663, hot cigarette drying cycles dress Put 67, drying 671, heater 672, uniaxial pressure airduct 673, dc source 674, flue 7, chimney 8

Embodiment

As shown in Figure 1, industrially desulfurized dusting smoke-discharging device is by desulfuration absorbing tower stack shell 1, agitator 2, circulating pump 3, spray Shower device 4, demister arrangements 5, electrostatic precipitator 6, flue 7 and chimney 8 are constituted.Desulfuration absorbing tower stack shell 1 is general in high cylinder Tubular, bottom is that agitator 2 and circulating pump 3 are mounted with laying dust Chi Cebi, and the position of laying dust pond up offers one and enters cigarette Mouth 11, the position of smoke inlet 11 is up evenly distributed successively to be provided with one group of spray equipment 4, and spray equipment 4 is up one group of demisting Device device 5, demister arrangements 5 are up provided with an electrostatic precipitator 6 on stack shell section, and top sets exhaust opening 12, The connection flue 7 of exhaust opening 12 connects chimney 8.

As shown in Figure 2, the rectangular in configuration of electrostatic precipitator 6, inside is divided into upper bin 62 and lower storehouse by sandwich plate 61 Room 63；Opened up in the middle of sandwich plate 61 and open up drying mounting hole 612 respectively on dust collecting pole plate mounting hole 611, four angles；Dust collector pole It is fixedly mounted on plate mounting hole 611 on dust collecting pole plate 64, drying mounting hole 612 and drying 671 is fixedly mounted；In lower bin 63 Discharge plate 65 is fixedly mounted；The both sides of dust collecting pole plate mounting hole 611 in soot blower 66, upper bin 62 are installed in upper bin 62 The soot-blowing nozzle 661 that is slidably installed is installed with rail plate 662, rail plate 662；Lower bin 63 is connected by drying 671 Connect hot cigarette drying cycles device 67.

Described electrostatic precipitator is chamber in rectangular configuration, and length is not less than 5m, and width is not less than 3m, and height is not small In 1m, the shape of changeover portion is consistent with desulfuration absorbing tower stack shell 1 with diameter up and down.

Described dust collecting pole plate 64 is made up of foam metal plate or honeycomb ceramic plate or foamed plastics with conducting function, In cylindrical type construction or rectangular slab construction；The dust collecting pole plate diameter of plectane column type construction is not less than 2m, and thickness is not less than 8mm；Square The dust collecting pole plate length of shape plate construction is not less than 2m, and width is not less than 2m, and thickness is not less than 8mm；The dust collector pole of cylindrical type construction The diameter of plate 64 is not less than the diameter of desulfuration absorbing tower stack shell 1；The length of side of dust collecting pole plate 64 of rectangular configuration is not less than desulfuration absorbing tower The diameter of stack shell 1.

Described discharge plate 65 is that the bonding jumpers that prickle is carried by 10 groups arrange structure along dust chamber length direction or width Into prickle spacing is between 100mm-500mm, and two ends are formed by welding discharge electrode framework with bonding jumper.

Described soot blower 66 is made up of one group of soot-blowing nozzle being arranged in a row 661 and rail plate 662, purging section with The width or diameter of dust collecting pole plate 64 are consistent；Length or diameter of the stroke of rail plate 662 not less than dust collecting pole plate 64；Soot blowing Mouth 661 is connected with pulsometer 663, and outlet pressure is risen between 1.0MPa-8.0MPa.

Described discharge plate 65 and dust collecting pole plate 64, spacing preferably is between 200mm-500mm.

Described hot cigarette drying cycles device 67 is made up of drying 671, heater 672, uniaxial pressure airduct 673；It is single Having heaters 672 is installed into the pipeline of pressure airduct 673, one end is connected with desulfuration absorbing tower stack shell 1, drying is connected in one end 671；The fixed insulation of drying 671 is arranged on sandwich plate 61, is connected with lower bin 63；The outlet of uniaxial pressure airduct 673 pressure rises Between 2000Pa-5000Pa, the outlet temperature of heater 672 is more than 180 degrees Celsius.

Embodiment 1：During work, dusty gas enters absorption tower by absorption tower smoke inlet 11, through spray equipment 4 and demisting Device 5 enter electrostatic precipitator 6, after the filtering and Electrostatic Absorption dedusting of dust collecting pole plate 64, by absorption tower exhaust pass 7 from Chimney 8 is discharged into air.

Embodiment 2：The working method of electrostatic precipitator 6, switches on power, and voltage class is 60000V to 70000V high straightening Stream electricity makes ambient gas ionize shape through forming high voltage electric field on discharge plate 65 by the prickle corona discharge on discharge plate 65 Into charged ion, dust from gas grit by surrounding by high-voltage electrostatic field when, occur with interelectrode negative ions and electronics Collision and it is charged (or charged in ion diffusion motion), take the grit of electronics and ion in the presence of electric field force to gathering dust Pole plate 64 is moved and product is attached on dust collecting pole plate 64, and gas is then by dust collecting pole plate 64 by internal discharge upwards.Work as dust collecting pole plate When grit on 64 is attached to certain thickness, the inside and outside differential pressure of dust collecting pole plate 64 increase, control system starts soot blower 66 and purged Dust collecting pole plate 64, soot-blowing nozzle 661 is advanced along rail plate 662 under power drive, effect of the soot-blowing nozzle 661 in pulsometer 663 The dust that the gases at high pressure of lower ejection will be attached on dust collecting pole plate 64 blows off, and the dust blown off falls into desulfuration absorbing tower slurries Pond.

Embodiment 3：Pressure fan in the hot operation principle of cigarette drying cycles device 67, uniaxial pressure airduct 673 makes pipeline Middle gas forms unidirectional conveying, and heater 672 is sent between the clean flue gas after processing is boosted into 2000Pa-5000Pa, 180 degrees Celsius are heated to by heater 672, finally by entering after the drying process of drying 671 in lower bin 63.Drying 671 connection dc sources 674.

Claims

1. a kind of electrostatic precipitator, it is characterised in that：Chamber in rectangular configuration, length is not less than 5m, and width is not less than 3m, high Degree is not less than 1m, and the shape of changeover portion and diameter and desulfuration absorbing tower stack shell (1) are unanimously, internal to be split by sandwich plate (61) up and down For upper bin (62) and lower bin (63)；Open up and opened respectively on dust collecting pole plate mounting hole (611), four angles in the middle of sandwich plate (61) If drying mounting hole (612)；Dust collecting pole plate (64), drying mounting hole are fixedly mounted on dust collecting pole plate mounting hole (611) (612) drying (671) is fixedly mounted on；Discharge plate (65) is fixedly mounted in lower bin (63)；Installed in upper bin (62) The both sides of dust collecting pole plate mounting hole (611) are installed with rail plate (662) in soot blower (66), upper bin (62), sliding Be slidably installed soot-blowing nozzle (661) on dynamic guide rail (662)；Lower bin (63) connects hot cigarette drying cycles by drying (671) and filled Put (67)；The soot blower (66) is made up of one group of soot-blowing nozzle being arranged in a row (661) and rail plate (662), and purging is disconnected Face is consistent with the width or diameter of dust collecting pole plate (64), and the stroke of rail plate (662) is not less than the length of dust collecting pole plate (64) Or diameter；Soot-blowing nozzle (661) is connected with pulsometer (663), and outlet pressure is risen between 1.0MPa-8.0MPa；Described hot cigarette is done Dry EGR (67) is made up of drying (671), heater (672), uniaxial pressure airduct (673)；Uniaxial pressure airduct (673) having heaters (672) is installed, one end is connected with desulfuration absorbing tower stack shell (1), and drying is connected in one end in pipeline (671)；Drying (671) fixed insulation is arranged on sandwich plate (61), is connected with lower bin (63)；Uniaxial pressure airduct (673) outlet pressure is risen between 2000Pa-5000Pa, and heater (672) outlet temperature is more than 180 degrees Celsius.

2. electrostatic precipitator as claimed in claim 1, it is characterised in that：Dust collecting pole plate (64) is by the foam with conducting function Metallic plate or honeycomb ceramic plate or foamed plastics are made, and are constructed in cylindrical type construction or rectangular slab；The dust collector pole of cylindrical type construction Board diameter is not less than 2m, and thickness is not less than 8mm；The dust collecting pole plate length of rectangular slab construction is not less than 2m, and width is not less than 2m, thick Degree is not less than 8mm；Dust collecting pole plate (64) diameter of cylindrical type construction is not less than the diameter of desulfuration absorbing tower stack shell (1)；Rectangle structure Dust collecting pole plate (64) length of side made is not less than the diameter of desulfuration absorbing tower stack shell (1).

3. electrostatic precipitator as claimed in claim 1, it is characterised in that：Discharge plate (65) is the gold that prickle is carried by 10 groups Category bar is arranged to make up along dust chamber length direction or width, and prickle spacing is between 100mm-500mm, and two ends are welded with bonding jumper Constitute discharge electrode framework.

4. electrostatic precipitator as claimed in claim 1, it is characterised in that：Discharge plate (65) is with dust collecting pole plate (64) spacing Between 200mm-500mm.